CN102421379B - Improved bone resector - Google Patents
Improved bone resector Download PDFInfo
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- CN102421379B CN102421379B CN201080017936.5A CN201080017936A CN102421379B CN 102421379 B CN102421379 B CN 102421379B CN 201080017936 A CN201080017936 A CN 201080017936A CN 102421379 B CN102421379 B CN 102421379B
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- ultrasonic vibration
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- surigical tool
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 39
- 238000006073 displacement reaction Methods 0.000 claims description 23
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- 230000017074 necrotic cell death Effects 0.000 abstract description 4
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- 238000005516 engineering process Methods 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 230000003534 oscillatory effect Effects 0.000 description 3
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- 238000002316 cosmetic surgery Methods 0.000 description 2
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
- A61B2017/320028—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments with reciprocating movements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320072—Working tips with special features, e.g. extending parts
- A61B2017/320074—Working tips with special features, e.g. extending parts blade
- A61B2017/320077—Working tips with special features, e.g. extending parts blade double edge blade, e.g. reciprocating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320089—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic node location
Abstract
A bone resector tool (100) comprises an ultrasonic transducer (8), typically generating longitudinal mode vibrations at around 40 kHz, and having an elongate blade portion (2) mounted thereto. The transducer (8) and blade portion (2) are mounted to a rotatably- drivable converter element (3). Rotation of the converter element (3) produces reciprocal longitudinal motion of the transducer (8) and blade portion (2). A counterweight (5B) is also mounted to the converter element (3), moving exactly out of phase with the transducer (8) and blade portion (2), such that a centre of mass of the whole system is stationary, reducing vibration of the tool (100) in a user's hand. The peak velocity due to the ultrasonic vibrations of a distal tip (6A) of the blade portion (2) is up to seven times greater than its peak velocity due to the reciprocal longitudinal motion. This permits rapid, low-effort cutting of bone with easy removal of cut debris and minimal consequent necrosis.
Description
Technical field
The present invention relates to a kind of for cutting the Surigical tool of cortical bone and spongy bone.More particularly but do not limit ground, the present invention relates to the Surigical tool of a kind of bone for minimum wound surgery operating technology excision.
Background technology
For example, from our UK Patent Application No.GB2420979A, be informed in apparatus cutting cortical bone and the spongy bone that uses ultrasonic exciting surgical procedures, this apparatus has cut edge, and described cut edge has serrate profile.
Under many situations, there is the skew of sharp keen gear tooth profile and side direction tooth traditional to fill dynamic oscillatory type saw be also effective.Yet little by little, joint replacement surgery wherein is often carried out by the otch of size reduction, to reduce soft tissue injury.Although this healing aspect after surgery has obvious benefit, to surgical technology and dexterous having relatively high expectations, to realize correct surface of bone geometry for implantation position, thereby by this limited incision operation.Thereby the use of this minimum interventional technique can make obviously to increase being adjacent to the danger of collateral damage of sensitive organization's structure of the surgery location of expectation on the contrary.The dynamic saw that fills of traditional sharp profile of tooth is easy to cut ligament, vascular and nervous tissue, and only sharp cut edge is of short duration contacts with it for they.
The blade of ultrasonic vibration needn't be sharp, only when starting, just cuts.They also can be suitable for by energy selectivity have precedence over soft tissue and be delivered to hard bone shape body.Therefore, they often cause less accidental injury.Unfortunately, compare with traditional oscillatory type saw, at present, this instrument is obviously more slowly carried out the major function of their cutting bone, therefore as desired, be not widely used, particularly when considering their relative complexity and during cost.
Another problem having met with is that, when ultrasonic energy is dissipated in bone, the osteotome of ultrasonic vibration can cause local heating.This can cause local bone downright bad, and then has poor recovery from illness result.
Another problem with traditional oscillatory type saw, a part for oscillation action trends towards being delivered to surgical hands from instrument.This low-frequency vibration is uncomfortable, and can cause the tired faster of surgical hands and finger, and long this effect even can produce the problem such as " empty-handed finger ".
Summary of the invention
Therefore, the object of this invention is to provide improved surgical operation bone cutting tool, it has eliminated at least some problems in the problems referred to above, and can carry out fast and accurately resected bone minimum in the situation that adjacent soft tissue or all the other bone are damaged.
According to a first aspect of the invention, a kind of Surigical tool that is suitable for cutting bone material has been proposed, described Surigical tool comprises cutter head device, described cutter head device has the cut edge structure of bar shaped, wherein, described cutter head device is operably connected to for generation of the device of ultrasonic vibration with for making the back and forth device of displacement of cutter head device.
Back and forth shift unit preferably acts on substantially in parallel with cut edge structure.
Preferably, back and forth shift unit is suitable for producing oscillating movement with 250Hz or lower frequency.
Advantageously, this frequency of oscillation is 20Hz at least.
Alternatively, described frequency of oscillation is 40-60Hz, for example, be approximate 50Hz.
Preferably, the described device for generation of ultrasonic vibration is suitable for producing described vibration with the frequency of 20kHz at least.
Advantageously, described ultrasonic vibration produces with 60kHz or lower frequency.
Alternatively, described ultrasonic vibration produces to be similar to the frequency of 40kHz.
Preferably, the relative amplitude of the oscillating movement of ultrasonic vibration and cutting head makes cutting head because the peak velocity of ultrasonic vibration is greater than the peak velocity being produced by oscillating movement.
Advantageously, at least twice that is the peak velocity that produced by oscillating movement due to the peak velocity of the cutting head of ultrasonic vibration.
Because the peak velocity of the cutting head of ultrasonic vibration is the peak velocity that produced by oscillating movement at least three times.
Because the peak velocity of the cutting head of ultrasonic vibration is the peak velocity that produced by oscillating movement ten times at the most.
Advantageously, because the peak velocity of the cutting head of ultrasonic vibration is the peak velocity that produced by oscillating movement seven times at the most.
Preferably, ultrasonic vibration comprises the longitudinal ultrasonic ripple vibration of pointing to oscillating movement and cut edge structure almost parallel.
Described cutter head device can comprise the wave guide member of bar shaped, and described wave guide member has and the contiguous cut edge structure arranging of its far-end.
Cut edge structure can comprise the toothing that long line is arranged.
Described toothing can comprise respectively broached-tooth design.
In a preferred embodiment, for the device that cutter head device is back and forth shifted, be provided with the first bascule for cutter head device, described the first bascule can out of phase back and forth be shifted with cutter head device.
Advantageously, the first bascule can with cutter head device roughly anti-phase be shifted.
The center of gravity of cutter head device and the first bascule can roughly remain unchanged.
Advantageously, for the device that cutter head device is back and forth shifted, make cutter head device and the displacement of the described device for generation of ultrasonic vibration.
Back and forth shift unit can be provided with the second bascule, and described the second bascule is used for cutter head device and the described device for generation of ultrasonic vibration, and can out of phase back and forth be shifted with them.
The second bascule can with cutter head device and described device for generation of ultrasonic vibration roughly anti-phase be shifted.
Thereby the center of gravity of cutter head device, the described device for generation of ultrasonic vibration and the second bascule can roughly remain unchanged.
Preferably, back and forth shift unit comprises the body of rotating substantial cylindrical, described body has the first rail structure and the second rail structure, described the first rail structure and the second rail structure are extended continuously around described body respectively, wherein, cutter head device, the optional described device for generation of ultrasonic vibration engage movably with the first rail structure, and corresponding bascule engages movably with the second rail structure.
Advantageously, described in each, rail structure comprises groove structure.
Cutter head device and bascule can be respectively equipped with double pointed nail structure, and described double pointed nail structure is constrained in corresponding groove structure and moves.
Preferably, the pivot center of each rail structure and body extends around columniform body at angle, wherein, is obliquely installed to the first rail structure and the second rail inverted configuration.
Thereby longitudinal deployed position of each rail structure is around the circumferential variation of columniform body.
When columniform body rotates, be connected to the cutter head device of corresponding rail structure and bascule driven and move back and forth, and out-phase each other, inverting each other alternatively.
Preferably, back and forth shift unit is provided with electric machine, and described electric machine is suitable for driving columniform body and makes its rotation.
Advantageously, described electric machine is provided with for selecting the device of the expectation velocity of rotation of body.
Preferably, described instrument comprises available grasped and steerable outer casing device, and described outside housing cover device is at least sealed reciprocal shift unit and the described device for generation of ultrasonic vibration.
Advantageously, described instrument comprises the outer casing device of bar shaped, and described outer casing device has the cutter head device from its longitudinal extension.
In a preferred embodiment, described cut edge structure is provided with a plurality of teeth along its arrangement.
Described in each, tooth can have hook-type profile.
Described in each the tip of hook tooth can be roughly towards the remote extension of instrument.
Described profile can be suitable in any osteotome, particularly can the osteotome of ultrasonic vibration in.
According to a second aspect of the invention, provide a kind of method of cutting bone material, comprised the following steps: the instrument described in first aspect is above provided; The cut edge structure of described instrument is applied to bone material district to be cut; Open reciprocal shift unit and the described device for generation of ultrasonic vibration; And manual guidance instrument, until produced cutting or the tangent plane of being on tiptoe.
Preferably, described method is suitable for as operating part cutting cortical bone and/or spongy bone.
Advantageously, said method comprising the steps of: form the otch that leads to bone to be cut from body surface; And by this otch, the cutter head device of described instrument is imported.
Described method can comprise the following steps: cutting bone, to be that implantation prosthetic device, for example plastic surgery joint replacement are prepared.
Described method can comprise the following steps: cutting bone, and to remove the prosthetic device of implantation, for example, as the part of the revision procedure of plastic surgery's joint replacement.
Accompanying drawing explanation
Below, particularly referring to accompanying drawing, by example, embodiments of the invention are described, accompanying drawing comprises:
Figure 1A is the schematic longitudinal sectional view that embodies the built-in function structure of the first bone resector instrument of the present invention;
Figure 1B is the cross section of the driving plush copper separated with the instrument shown in Figure 1A;
Fig. 1 C is the local radial cross section of the driving plush copper shown in the Figure 1B operating in the instrument shown in Figure 1A;
Fig. 1 D is the schematic longitudinal sectional view that embodies the built-in function structure of the second bone resector instrument of the present invention;
Fig. 1 E is the partial elevation view of the cutting head of the second instrument shown in Fig. 1 D;
Fig. 2 is the side view of the driving converters separated with the instrument shown in the instrument shown in Figure 1A or Fig. 1 D;
Fig. 3 is the side view of the driving shaft separated with the instrument shown in the instrument shown in Figure 1A or Fig. 1 D;
Fig. 4 be the driving converters shown in Fig. 2 with and the side view of drive arrangements structure and the compensating cylinder that is connected thereto;
Fig. 5 is the side view of the driving converters shown in Fig. 2 and the blade driving cylinder that is connected thereto; And
Fig. 6 is any the side view in the instrument shown in Figure 1A and 1D, comprise in dissect with partial disassembly form under its outer casing.
The specific embodiment
Below, referring to accompanying drawing, particularly, referring to Figure 1A, the sound system 1 of the first bone resector instrument 100 comprises the ultrasonic transducer 8 of vertical pattern (generally including the piezoelectric element of stacking placement), and described ultrasonic transducer 8 is connected to the removable blade section 2 of strip by arm configuration 4.Blade section 2 has cutting head 6 at its far-end, and described cutting head 6 is provided with one or more side direction cut edge.(cut edge does not illustrate particularly in Figure 1A, but the sawtooth of the arranged in arrays that the geometry that conventionally can comprise expecting arranges.The present invention can be suitable for the osteotome blade geometry of the most multiple or all existing forms).
The special instrument 100 illustrating produces ultrasonic vibration in its blade section 2, and described ultrasonic vibration has the maximum length travel amplitude of 80-140 μ m at the far-end 6A place of cutting head 6.Ultrasonic transducer 8, arm 4 and blade section 2 are adjusted to and make the antinode place of far-end 6A in ultrasonic vibration.The displacement amplitude at the near-end 6B place of cutting head 6 be far-end 6A place displacement amplitude about 60%.
The ultrasonic vibration that has been found that nearly ultrasound wave district is suitable, for example, in the scope in 20-60kHz.The frequency approaching with 40kHz is preferred at present.This produces 10-50m.s at far-end 6A place
-1peak value blade speed.
Sound system 1 remains in the cylindrical housings 10 of strip, and blade section 2 is stretched out to far-end from described housing 10.In the proximal end of housing 10, housing 10 is threaded connection portion 21 and is fixed to blade driving cylinder 5A, and the function of described blade driving cylinder will be described below.
The motor 17 that is adjacent to the near-end of instrument 100 and acts on by gear-box 9 and driving shaft 24 (referring to Fig. 3) drives the axle 7 of the driving converters 3 of the center that is usually located at instrument 100.Motor 17 drives converters 3, to make it rotating (representing by arrow 11) along single direction continuously with controlled speed.
Converters 3 comprises cylindrical body, and described cylindrical body has around the first groove 19A of its circumferential extension and the second groove 19B.Each groove 19A, 19B include single continuous ring, and described continuous ring extends in the plane at angle of the sagittal plane of the body with by converters 3.Each groove 19A, 19B are with identical angle but with contrary direction/sensing inclination.Therefore, locate for first on the circumference of converters 3, groove 19A, 19B are comparatively approaching, but they diverge to around circumference from described first, until at the second point with relative on the first spot diameter, they are far away toward each other.From second point, continue around circumference, groove 19A, 19B are again towards first convergence.Thereby groove 19A, 19B produce respectively lateral displacement x, generally, this displacement is measured along the longitudinal axis of converters 3 and instrument 100.(referring to Fig. 2 that converters 3 is shown separately).Blade driving cylinder 5A extends around the distal portions of converters 3, and is connected to converters 3 by means of the driving plush copper 12 of advancing in the first groove 19A.
Compensating cylinder 5B extends coaxially around the proximal part of gear-box 9 and converters 3, and is connected to converters by means of the driving plush copper 12 of advancing in the second groove 19B.
As shown in Figure 1B, each drives plush copper 12 to comprise the dog screw 16 in the metal lining 18 stretching in high density polyethylene (HDPE) (HDPE) piece 14.As shown in Figure 1 C, dog screw 16 is fixed to blade driving cylinder 5A or compensating cylinder 5B by driving plush copper 12, and wherein, the HDPE piece 14 of low friction is positioned at corresponding the first groove 19A or the second groove 19B.
Therefore, when converters 3 rotates, the corresponding plush copper 12 that drives must follow their corresponding groove 19A, 19B slippage (please noting: have spline structure, for the sake of clarity save, this spline structure is used for preventing that cylinder 5A, 5B are only along with converters 3 rotates).Thereby, drive plush copper 12 and their corresponding cylinder 5A, 5B to be forced to, along axially the advancing of instrument 100, first towards the end of becoming estranged of instrument 100, outwards advance, then towards returning each other, advance.Thereby due to the arrangement form of the reverse inclination of groove 19A, 19B, cylinder 5A, 180 ° of degree of 5B out-phase (that is, anti-phase) are mobile.
Blade driving cylinder 5A is fixedly secured to housing 10, entrapped ultrasonic transducer 8 and the blade section 2 of instrument 100.Thereby whole sound system 1 is reciprocally shifted along the longitudinal axis of instrument 100, particularly produce reciprocal longitudinal action of cutting head 6.
The special instrument 100 illustrating is arranged to and makes under this back and forth/oscillation action frequency in about 50Hz, wherein, and in the level of the lateral displacement x of groove 19A, blade driving cylinder 5A and cutting head 6 in 3-10 millimeter.
Compensating cylinder 5B is configured to have with blade driving cylinder 5A and sound system 1, comprises the quality that the gross mass of housing 10 and blade section 2 is approaching as far as possible.Therefore, when converters 3 rotate and compensating cylinder 5B also with identical reciprocal/frequency of oscillation and identical lateral displacement x are when move, the center of gravity of compensating cylinder 5B, blade driving cylinder 5A and sound system 1 should keep roughly constant.Compare, vibration type saw traditional under the frequency of about 50Hz tends to cause that the vibration of the hands that is delivered to user (may cause discomfort, fatigue, even can damaged tissue under long duration of action), and the instrument 100 illustrating can produce minimum or be zero appreciable vibration in user's hands.This permission can the longer time use, and there is in use higher precision, this is because user's hands can not feel tired within the longer time.
The second bone resector instrument 101 shown in Fig. 1 D and the first bone resector instrument 100 are very similar.Its vertical pattern ultrasonic transducer 8, arm 4 and blade section 2 are illustrated in greater detail, and for the structure that ultrasonic transducer 8, arm 4 and blade section 2 are fixed together, are illustrated in greater detail equally.The second instrument 101 operates in the mode identical with the first instrument 100.
The cutting head 6 of the second instrument 101 is also illustrated in greater detail in Fig. 1 D, particularly in Fig. 1 E.The cutting head 6 of the second instrument 101 has two side direction cut edges, and described two side direction cut edges are assembled a little towards its far-end 6A.Each cut edge is provided with the cutting teeth 6C of arranged in arrays.Each cutting teeth 6C has hook-type or " shark tooth " profile, and wherein, the wedge angle of each hook tooth aligns towards the far-end 6A of cutting head 6.Cutting teeth 6C is limited by the inclined notch 6D of arranged in arrays, and each notch has the inner, and described the inner has the profile that comprises a round part.
Although the cutting head of this form 6 is useful especially in being included in as described above bone resector instrument 100,101 time, but it should be pointed out that it in other bone resector instruments (osteotome), particularly at cutting head 6, be in the bone resector instrument of ultrasonic vibration, to be also useful.
Converters 3 is illustrated in greater detail in Fig. 2.Groove 19A, 19B are as mentioned above.Above unshowned be axial hole or passage 23, described axial hole or passage receive the driving shaft 24 shown in Fig. 3.The cylindrical shaft 26 of driving shaft 24 is provided with par 27.The radial hole 13A (Fig. 2) extending in its axial hole 23 by converters 3 can make radial screw 13 (Fig. 1) engage with par 27, so that driving shaft 24 is fixed to converters 3.The proximal structure 28 of driving shaft 24 makes it can be connected to gear-box 9.
Fig. 4 shows compensating cylinder 5B, and the driving plush copper 12 that described compensating cylinder 5B follows the second groove 19B slippage by it is connected to converters 3.Under the deployable state illustrating, compensating cylinder 5B towards in the direction at instrument 100 center in its maximum displacement place.
Compare, Fig. 5 shows the blade driving cylinder 5A that is connected to converters 3, but under this deployable state, under this deployable state, blade driving cylinder 5A with respect to the far-end of instrument 100,101 in its maximum displacement place.(noting the gap 7C between the far-end of converters 3 and blade driving cylinder 5A).
Fig. 6 shows the other feature of instrument 100,101 generally.Built-in function structure shown in Fig. 1 is encapsulated in three-member type case 30,31 and 32.Proximal cap 31 and distal cap 32 are all releasably attached to main case 30, and wherein, sealing member 33 is arranged on place, corresponding junction, with the internal work parts of protection instrument 100, for example, prevents that fluid from entering.
Described main case 30 crosses corresponding space 17C, 9C, for keeping the proximal part of motor 17 and gear-box 9 (not shown), converters 3, two cylinder 5A, 5B and supersonic generator 8.
Proximal cap 31 has for current supply cable and controls the opening 34 (this be common to this instrument that will activate by means of foot switch, is not now by being positioned at originally finger manipulation formula actuation of the switch with it of instrument) of cable.
Dismountable distal cap 32 makes to approach supersonic generator 8.
Another feature of this instrument 100,101 is that blade section 2 is dismountable by using helicitic texture 35.Thereby the blade with the cutting head 6 of optional geometry can be assembled, and can be replaced with cutting head 6 old or that damage.
Thereby the instrument 100,101 illustrating has not only by ultrasonic vibration, but also with relatively very low frequency reciprocal cut edge of displacement in macro-scale.Combined ultrasonic wave excitation and macroscopical blade move back and forth by this way, have obtained obvious advantage aspect cutting efficiency.Under enough amplitude of ultrasonic, the required physical force of cutting bone is reduced to close to zero, and reciprocating action makes the bone tissue of embrittlement with very little counteracting force displacement.This can produce vibrationless sensation when surgeon cuts in bone, and aspect precision, comfort level, has obvious benefit and reducing fatigue.Above-mentioned balance macroscopic view reciprocating drive mechanism has further strengthened this substantially vibrationless action.
High-amplitude ultrasonic heats alone the tissue that it acts on.This heat by macroscopical blade displacement, removes fast and efficiently every layer of heated tissue and avoided head necrosis, otherwise can produce head necrosis, because can be dissipated in surrounding tissue.
This mechanism obtains and shows in Research of Animal Model for Study, to produce a kind of method of effective and safe bone excision.This research shows to have low-down head necrosis level, does not even need as traditional method for clean and cooling cleavage site adopts normal saline washing.Soft tissue destruction is negligible.
For the system that makes to illustrate has maximum benefit aspect comfort level and efficiency, have been found that ultrasonic velocity amplitude should surpass low frequency macroscopic velocity amplitude, they are preferably 3-7 relation doubly.This has guaranteed, cut edge all oppositely obviously benefits from friction vector within the almost whole cutting cycle that moves back and forth blade all the time with respect to the Relative Oscillation motion of osseous tissue.
Should be appreciated that (no matter frequency how) remains on tissue by vibration blade and will produce pure heat effect.Only, by blade is moved through to destination organization progressively, just can realize cutting, and heated tissue is removed from direct surgical site.The manual body kinematics of blade is unpractical in described parameter, and therefore, combination action of the present invention has large practical benefits.
Claims (21)
1. a Surigical tool that is suitable for cutting bone material, described Surigical tool comprises cutter head device, described cutter head device has cut edge structure, wherein, described cutter head device is operably connected to for generation of the device of ultrasonic vibration with for making the back and forth device of displacement of cutter head device, and described for making the device of the reciprocal displacement of cutter head device be provided with the first bascule for cutter head device, described the first bascule can out of phase back and forth be shifted with cutter head device.
2. Surigical tool as claimed in claim 1, is characterized in that, back and forth shift unit is shifted cutter head device and cut edge structure substantially in parallel.
3. Surigical tool as claimed in claim 1, is characterized in that, the first bascule can with cutter head device roughly anti-phase back and forth displacement.
4. as the Surigical tool as described in arbitrary in claim 1-3, it is characterized in that, the center of gravity of cutter head device and the first bascule roughly remains unchanged.
5. as the Surigical tool as described in arbitrary in claim 1-3, it is characterized in that, for make cutter head device back and forth the device of displacement make cutter head device and the displacement of the described device for generation of ultrasonic vibration.
6. Surigical tool as claimed in claim 5, is characterized in that, back and forth shift unit is provided with the second bascule, and described the second bascule is used for cutter head device and the described device for generation of ultrasonic vibration, and can out of phase back and forth be shifted with them.
7. Surigical tool as claimed in claim 6, is characterized in that, the second bascule can with cutter head device and described device for generation of ultrasonic vibration roughly anti-phase back and forth displacement.
8. the Surigical tool as described in claim 6 or 7, is characterized in that, the center of gravity of cutter head device, the described device for generation of ultrasonic vibration and the second bascule roughly remains unchanged.
9. as the Surigical tool as described in arbitrary in claim 1-3 and 6-7, it is characterized in that, back and forth shift unit comprises the body of rotating substantial cylindrical, described body has the first rail structure and the second rail structure, described the first rail structure and the second rail structure are extended continuously around described body respectively, wherein, cutter head device, the optional described device for generation of ultrasonic vibration engage movably with the first rail structure, and corresponding bascule engages movably with the second rail structure.
10. Surigical tool as claimed in claim 9, is characterized in that, the pivot center of each rail structure and body extends around rotating columniform body at angle, wherein, is obliquely installed to the first rail structure and the second rail inverted configuration.
11. as the Surigical tool as described in arbitrary in claim 1-3,6-7 and 10, it is characterized in that, the relative amplitude of the reciprocal displacement of ultrasonic vibration and cutting head makes cutting head because the peak velocity of ultrasonic vibration is greater than the peak velocity being produced by reciprocal displacement.
12. Surigical tools as claimed in claim 11, is characterized in that, due to serve as reasons at least twice of the peak velocity that back and forth displacement produces of the peak velocity of the cutting head of ultrasonic vibration.
13. Surigical tools as claimed in claim 11, is characterized in that, due to serve as reasons ten times at the most of peak velocity that back and forth displacement produces of the peak velocity of the cutting head of ultrasonic vibration.
14. as claim 1-3,6-7,10 and 12-13 in Surigical tool as described in arbitrary, it is characterized in that, back and forth shift unit is suitable for producing oscillating movement with 250Hz or lower frequency.
15. Surigical tools as claimed in claim 14, is characterized in that, described frequency of oscillation is 20Hz at least.
16. Surigical tools as claimed in claim 14, is characterized in that, described frequency of oscillation is 40-60Hz.
17. as the Surigical tool as described in arbitrary in claim 1-3,6-7,10,12-13 and 15-16, it is characterized in that, the described device for generation of ultrasonic vibration is suitable for producing described vibration with the frequency of 20kHz-60kHz.
18. as the Surigical tool as described in arbitrary in claim 1-3,6-7,10,12-13 and 15-16, it is characterized in that, ultrasonic vibration comprises the ultrasonic vibration of the vertical pattern pointing to oscillating movement and cut edge structure almost parallel.
19. as the Surigical tool as described in arbitrary in claim 1-3,6-7,10,12-13 and 15-16, it is characterized in that, cutter head device comprises the wave guide member of bar shaped, and described wave guide member has and the contiguous cut edge structure arranging of its far-end.
20. as the Surigical tool as described in arbitrary in claim 1-3,6-7,10,12-13 and 15-16, it is characterized in that, cut edge structure is provided with a plurality of hook tooth structures.
21. Surigical tools as claimed in claim 20, is characterized in that, the tip of each hook tooth structure is roughly towards the remote extension of instrument.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0906930.3A GB0906930D0 (en) | 2009-04-23 | 2009-04-23 | Improved bone resector |
| GB0906930.3 | 2009-04-23 | ||
| PCT/GB2010/000776 WO2010122288A1 (en) | 2009-04-23 | 2010-04-19 | Improved bone resector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102421379A CN102421379A (en) | 2012-04-18 |
| CN102421379B true CN102421379B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080017936.5A Active CN102421379B (en) | 2009-04-23 | 2010-04-19 | Improved bone resector |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20120095472A1 (en) |
| EP (2) | EP2839799B8 (en) |
| JP (1) | JP5726857B2 (en) |
| CN (1) | CN102421379B (en) |
| AU (1) | AU2010240755B2 (en) |
| CA (1) | CA2795608C (en) |
| GB (1) | GB0906930D0 (en) |
| WO (1) | WO2010122288A1 (en) |
| ZA (1) | ZA201108570B (en) |
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| CA2720442C (en) * | 2010-11-09 | 2013-03-19 | Genepro Systems Inc. | Orthodontic debonding tool, tool insert and method for removing orthodontic brackets |
| US9763690B2 (en) * | 2011-10-10 | 2017-09-19 | Ethicon Llc | Surgical instrument with transducer carrier assembly |
| US10076349B2 (en) * | 2013-03-15 | 2018-09-18 | Misonix, Inc. | Ultrasonic surgical drill and associated surgical method |
| US9668765B2 (en) * | 2013-03-15 | 2017-06-06 | The Spectranetics Corporation | Retractable blade for lead removal device |
| CN105592812B (en) * | 2013-09-27 | 2018-04-24 | 奥林巴斯株式会社 | Handle utensil and processing system |
| CN105578976B (en) | 2013-09-27 | 2018-09-18 | 奥林巴斯株式会社 | Contact unit, processing utensil and processing system |
| US9763674B2 (en) | 2013-12-26 | 2017-09-19 | Ethicon Llc | Ultrasonic bone cutting instrument |
| DE102015106749A1 (en) | 2015-04-30 | 2016-11-03 | Technische Universität Darmstadt | Multifunctional ultrasonic cutting device for attachment to a device for a minimally invasive procedure |
| JP6843994B2 (en) * | 2017-07-05 | 2021-03-17 | オリンパス株式会社 | Ultrasound probe and ultrasound treatment assembly |
| EP3784136A1 (en) * | 2018-04-27 | 2021-03-03 | Dentacon GmbH | Drive unit with oscillating element |
| CN110313972A (en) | 2019-07-31 | 2019-10-11 | 北京水木天蓬医疗技术有限公司 | Ultrasonic osteotome bit and the robot assisted ultrasound bone dynamical system for using the cutter head |
| CN114431923B (en) * | 2022-01-29 | 2022-09-30 | 北京铸正机器人有限公司 | Surgical cutting operation instrument |
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- 2010-04-19 JP JP2012506558A patent/JP5726857B2/en active Active
- 2010-04-19 CN CN201080017936.5A patent/CN102421379B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102421379A (en) | 2012-04-18 |
| EP2839799B1 (en) | 2018-01-17 |
| EP2421447B1 (en) | 2016-10-19 |
| JP2012524586A (en) | 2012-10-18 |
| EP2421447A1 (en) | 2012-02-29 |
| GB0906930D0 (en) | 2009-06-03 |
| ZA201108570B (en) | 2013-01-30 |
| EP2839799A1 (en) | 2015-02-25 |
| CA2795608A1 (en) | 2010-10-28 |
| US20120095472A1 (en) | 2012-04-19 |
| CA2795608C (en) | 2017-07-18 |
| JP5726857B2 (en) | 2015-06-03 |
| AU2010240755B2 (en) | 2015-09-03 |
| EP2839799B8 (en) | 2018-02-28 |
| AU2010240755A1 (en) | 2011-12-01 |
| WO2010122288A1 (en) | 2010-10-28 |
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| C56 | Change in the name or address of the patentee | ||
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Address after: Burke County, England Patentee after: Orthosonics Ltd. Address before: South Devon, England Patentee before: Orthosonics Ltd. |
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Effective date of registration: 20180109 Address after: Italy, Verona Patentee after: Orthofix S.R.L. Address before: Burke County, England Patentee before: Orthosonics Ltd. |
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